Information quantity-based reference sensor selection and active noise control using the same
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United States of America Patent
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Apr 2, 2024
Grant Date -
Jun 22, 2023
app pub date -
Sep 2, 2022
filing date -
Dec 17, 2021
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Abstract
An active noise control system selects one reference sensor providing a reference signal with the largest coherence to a noise signal, among a plurality of available reference sensors, as a first entry of a reference sensor set. After selecting the first entry, the active noise control system repeats a process in which a sensor capable of providing the largest information quantity to a current reference sensor set among remaining sensors is selected as a new entry of a reference sensor set, until a desired number of sensors is reached or a desired control level is reached. When the reference sensor set is determined, the active noise control system utilizes the entries of the reference sensor set to generates a noise control signal suitable for canceling the noise signal.
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